Propelling means



R. TANNER PROPELLING MEANS Filed July 17. 192

fioemnezg FFICE.

ROE TANNER, OF ATIIGA, OHIO.

PROPELLING MEANS.

Application filed July 17, 1924.

To all whom it may conccm:

Be it known that I, Ron TANNER, a citizen of the United States, residing at Attica, in the county of Seneca and State of Ohio, have invented a new and useful Propelling Means, of which the following is a specification.

This invention relates to aeroplane propelling means and aims to provide a novel means whereby a propeller at the forward end of a machine and a propeller at the rear end of the machine mav be simultaneously operated in opposite directions, the pitches of the blades of the propellers being such as to produce an equal amount of torque-to the body portion of the machine, thereby stabilizing the machine.

Another important object of the invention is to direct the power to the propellers in such a way that the propellers will adjust themselves to give an equal thrust, when in operation.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of. what is claimed, without departing from the spirit of the invention.

Referring to the drawing:

Figure 1 illustrates a side elevational view of an aeroplane supplied with propelling means constructed in accordance with the present invention.

Figure 2 is a fragmental sectional view through the gearing employed for transmitting power from one shaft to the adjacent shaft.

Figure 3 is an elevational view of the inner supporting ring of the gearing.

Referring to the drawing in detail, the

reference character 5 designates the body portion of an aeroplane and the reference character 6 designates the. power plant of the machine.

The forward propeller is indicated at 7 and is mounted on the forward extremity of the shaft 8 which carries a pinion 9 at its rear end meshing with the pinion 10, which pinions are mounted in the gear housing 11.

A shaft 12 extends through the gear housing 11 and carries a beveled pinion 18 which S rial No. 726,557.

pinion is in mesh with the beveled pinions 14 carried by the spider 15, there being pro vided a sectional supporting ring 16 to which the shafts 17 of the spider extend.

Formed on the ring 16 are teeth 18 over which operates the chain 19, the chain also operating over pinion 20 carried at one end of the crank shaft 21 of the engine 6, so that movement of the crank shaft will result in a relative movement of the spider to rotate the pinions associated therewith.

The rear propeller shaft is indicated at 22 and carries a propeller 23, the pitch of the blades of the propeller 23 being the reverse of the pitch of the blades of the propeller 7 so that as the propellers are rotating in 0pposite directions, both propellers will be acting to move the machine in a common direction.

Mounted on the forward end of the propeller shaft 22 is a beveled pinion 24 which is in mesh with the beveled pinions 14 so that movement will be transmitted to the shaft- 22.

From the foregoing it will be obvious that due to the pitches of the propeller blades, the action of the propellers 7 and 23 will be to move the aeroplane forwardly when the power plant is put into motion.

From the foregoing it will be obvious that the propeller at the rear of the machine and which operates under less resistance than the forward propeller, will operate at a greater speed and due to the construction as shown and described, the propellers will adjust themselves automatically, and give equal thrust.

While I have shown and described the device for use in connection with boats or the like, it is to be understood that the structure may be efficiently employed on motor vehicles or the like, without departing from the spirit of the invention.

I claim A propelling mechanism for aeroplanes including a power plant, a shaft extending through the power plant, said shaft carrying a propeller on one end thereof, a gear on the opposite end thereof, a gear housing housing the gear, a gear meshing with the first mentioned gear, a shaft on which the last mentioned gear is supported, said last mentioned shaft carrying a beveled pinion, a bearing adapted to rotate within the gear housing, pinions carried by the bearing member and adapted to mesh with the first mentioned member to receive motion therefro1n,'zi-'sl1aft V carrying-wpinion it its forward end-and disposed Within the gear housing, and mesh- 5 ing With pinions carried by the bearing member, and a propeller on one end of the propeller shaft. V 4

In testimony that I claimthe foregoing =as my own; I have" hereto= alfixed my signa tnre inthe presence-0f two-Witnesses;

ROE TANNER.

lVitnesses: I

GEO. W. FINK,

H. Gr. HEDDEN. 

